CN108710217A - A kind of integration imaging display device - Google Patents

A kind of integration imaging display device Download PDF

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Publication number
CN108710217A
CN108710217A CN201810491183.XA CN201810491183A CN108710217A CN 108710217 A CN108710217 A CN 108710217A CN 201810491183 A CN201810491183 A CN 201810491183A CN 108710217 A CN108710217 A CN 108710217A
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China
Prior art keywords
display device
low
pass filtering
filtering device
integration imaging
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CN201810491183.XA
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Chinese (zh)
Inventor
魏宝强
陈小川
赵文卿
陈祯祐
牛小辰
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to CN201810491183.XA priority Critical patent/CN108710217A/en
Publication of CN108710217A publication Critical patent/CN108710217A/en
Priority to US16/610,301 priority patent/US20210364814A1/en
Priority to PCT/CN2019/086245 priority patent/WO2019223546A1/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
    • H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/60—Systems using moiré fringes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/46—Systems using spatial filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/10—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images using integral imaging methods
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/288—Filters employing polarising elements, e.g. Lyot or Solc filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/01—Number of plates being 1
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/02—Number of plates being 2
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/08—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates with a particular optical axis orientation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/065—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L27/00
    • H01L25/0657—Stacked arrangements of devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Abstract

The invention discloses a kind of integration imaging display devices, including：Display device, and the microlens array positioned at display device light emission side and low-pass filtering device；Wherein, display device, including：Multiple display units for the three-dimensional image information for showing different angle；Microlens array, the three-dimensional image information for showing each display unit synthesize 3-D view；Low-pass filtering device, the moir patterns that can be identified for filtering out human eye.Integration imaging display device provided in an embodiment of the present invention, by the low-pass filtering device that can filter out the moir patterns that human eye can identify in the light emission side setting of display device, the moir patterns that each device so as to weaken or eliminate the incident side of low-pass filtering device generates, improve the Three-dimensional Display effect of integration imaging display device.

Description

A kind of integration imaging display device
Technical field
The present invention relates to display technology field, espespecially a kind of integration imaging display device.
Background technology
Many advantages, such as due to integration imaging with the real-time three-dimensional stereopsis that can show authentic color, full parallax, As the research hotspot of naked eye three-dimensional display field.Its basic principle is that lenticule is recorded in spatial field using microlens array On the subsequent film of array, each lenticule corresponds to an image primitive on film, and each image primitive has recorded in spatial scene A part of information, the image primitive array that all image primitives integrate composition just has recorded the three-dimensional letter of entire spatial scene Breath, according to light path principle, if being positioned over same microlens array when record before image primitive array, so that it may with micro- Original three dimensional spatial scene is enough played before lens array again.
In integration imaging display device in the prior art, since there are the array structure in display device, lenticule battle arrays The stacking phenomenon of row and striated pattern quasi-periodic structure, it is easy to moir patterns occur, as the black round frame circle in Fig. 1 is lived Structure, moir patterns are a kind of due to the new construction different from original linear structure that periodic structure stacks and is formed, moir patterns Appearance can influence image quality, the 3-D effect so as to cause integration imaging display device is poor.
Invention content
An embodiment of the present invention provides a kind of integration imaging display devices, existing in the prior art due to not to solve The problem that the appearance of your line causes the 3-D effect of integration imaging display device poor.
An embodiment of the present invention provides a kind of integration imaging display devices, including：Display device, and it is located at the display The microlens array and low-pass filtering device of device light emission side；Wherein,
The display device, including：Multiple display units for the three-dimensional image information for showing different angle；
The microlens array, the three-dimensional image information for showing each display unit synthesize 3-D view；
The low-pass filtering device, the moir patterns that can be identified for filtering out human eye.
In one possible implementation, described low in integration imaging display device provided in an embodiment of the present invention Pass filter device, including：It can make light that birefringent crystal filter occur；
The crystal filter can filter out the light more than cutoff frequency, and the cutoff frequency is with the crystal filter The increase of the thickness of piece and increase.
In one possible implementation, in integration imaging display device provided in an embodiment of the present invention, the crystalline substance The thickness of body filter plate meets following relationship：
Wherein, θ indicates the angle between incident light and optical axis, noIndicate the refractive index of ordinary ray, neIndicate extraordinary light Refractive index, d is at a distance from ordinary ray and extraordinary light separate, and T indicates the thickness of the crystal filter.
In one possible implementation, in integration imaging display device provided in an embodiment of the present invention, the crystalline substance The optical axis of body filter plate and the angle on the surface of the crystal optical filter are 45 °.
In one possible implementation, in integration imaging display device provided in an embodiment of the present invention, the crystalline substance Body filter plate is made by quartz crystal materials.
In one possible implementation, described low in integration imaging display device provided in an embodiment of the present invention Pass filter device includes a crystal filter；Or,
The low-pass filtering device includes at least two crystal filters, and the thickness of each crystal filter is not Together.
In one possible implementation, in integration imaging display device provided in an embodiment of the present invention, further include： Positioned at the first lens of the microlens array light emission side；
First lens, the light for converging the microlens array outgoing；
The low-pass filtering device is between the display device and first lens.
In one possible implementation, described low in integration imaging display device provided in an embodiment of the present invention Pass filter device is one；
The low-pass filtering device is between the display device and the microlens array；Or,
The low-pass filtering device is between the microlens array and first lens.
In one possible implementation, described low in integration imaging display device provided in an embodiment of the present invention Pass filter device is at least two, and the incomplete phase of spatial frequency of moir patterns that each low-pass filtering device can filter out Together；
Each low-pass filtering device is respectively positioned between the display device and the microlens array；Or,
Each low-pass filtering device is respectively positioned between the microlens array and first lens；Or,
Between the display device and the microlens array and the microlens array and first lens it Between be respectively provided at least a low-pass filtering device.
In one possible implementation, described aobvious in integration imaging display device provided in an embodiment of the present invention Show device, including；Backlight module, and multiple liquid crystal displays being stacked on the backlight module light direction Screen；Or,
The display device, including：Multiple organic EL display panels being stacked.
The present invention has the beneficial effect that：
Integration imaging display device provided in an embodiment of the present invention, including：Display device, and it is located at display device light extraction The microlens array and low-pass filtering device of side；Wherein, display device, including：For showing that the 3-D view of different angle is believed Multiple display units of breath；Microlens array, the three-dimensional image information for showing each display unit synthesize 3-D view； Low-pass filtering device, the moir patterns that can be identified for filtering out human eye.Integration imaging display device provided in an embodiment of the present invention, By the way that the low-pass filtering device for the moir patterns that human eye can identify can be filtered out in the light emission side setting of display device, so as to The moir patterns that each device of decrease or the incident side of elimination low-pass filtering device generates, improve the three of integration imaging display device Tie up display effect.
Description of the drawings
Fig. 1 is the schematic diagram for the moir patterns that periodic stack structure is formed in the embodiment of the present invention；
Fig. 2 is one of the structural schematic diagram of integration imaging display device provided in an embodiment of the present invention；
Fig. 3 a are the image-forming principle schematic diagram of single display unit；
Fig. 3 b are the image-forming principle schematic diagram of display device；
Fig. 4 is the second structural representation of integration imaging display device provided in an embodiment of the present invention；
Fig. 5 is the pulse attribute schematic diagram of moir patterns in two-dimensional frequency in the embodiment of the present invention；
Fig. 6 is that light passes through the direction of propagation schematic diagram after crystal filter in the embodiment of the present invention；
Fig. 7 is the third structural representation of integration imaging display device provided in an embodiment of the present invention；
Fig. 8 is the four of the structural schematic diagram of integration imaging display device provided in an embodiment of the present invention；
Wherein, 11-display device；11 '-display units；111-backlight modules；112-liquid crystal displays；113-have Organic electro luminescent display screen；12-microlens arrays；121-lenticules；13-low-pass filtering devices；14-the first lens.
Specific implementation mode
For the appearance existing in the prior art due to moir patterns cause the 3-D effect of integration imaging display device compared with The problem of difference, an embodiment of the present invention provides a kind of integration imaging display devices.
Below in conjunction with the accompanying drawings, the specific implementation mode of integration imaging display device provided in an embodiment of the present invention is carried out detailed Carefully illustrate.The thickness of each film layer and shape do not reflect that actual proportions, purpose are schematically illustrate the content of present invention in attached drawing.
An embodiment of the present invention provides a kind of integration imaging display devices, as shown in Fig. 2, including：Display device 11, and Positioned at the microlens array 12 and low-pass filtering device 13 of 11 light emission side of display device；Wherein,
Display device 11, including：Multiple display units for the three-dimensional image information for showing different angle；
Microlens array 12, the three-dimensional image information for showing each display unit synthesize 3-D view；
Low-pass filtering device 13, the moir patterns that can be identified for filtering out human eye.
Integration imaging display device provided in an embodiment of the present invention can be filtered out by the light emission side setting in display device The low-pass filtering device for the moir patterns that human eye can identify, so as to weaken or eliminate low-pass filtering device incident side it is each The moir patterns that device generates, improve the Three-dimensional Display effect of integration imaging display device.
In practical applications, aforementioned display device part includes multiple displays of the three-dimensional image information for showing different angle Unit, multiple display units can be arranged in array, above-mentioned microlens array, including：It is one-to-one with multiple display units Multiple lenticules.Specifically, each lenticule is preferably convex lens, and planoconvex spotlight may be used for the ease of making.It was showing Cheng Zhong, each display unit show the three-dimensional image information of different angle, the graphics that microlens array shows each display unit As information synthesizes 3-D view, to which the image for making viewer watch has three-dimensional stereopsis, specifically, such as Fig. 3 a institutes Show, for 11 ' of display unit, according to the image-forming principle of convex lens it is found that being located at the display within the focal length of lenticule 121 Image shown by 11 ' of unit is MN, forms virtual image M ' N ' after lenticule 121, is impinged perpendicularly on by M points or N points The light of lenticule 121, by the directive focus F after lenticule 121, and in the optical axis from M points by lenticule 121 Heart point O light S1, and the light S of the optical axis center point O by lenticule 121 that is sent out from N points2The direction of propagation do not occur Change, light path shown in Fig. 3 a can be obtained by drawing index path, therefore, the image that observer can watch is each in figure The intersection point of the reverse extending line of refracted light is formed by virtual image M ' N '.
As shown in Figure 3b, aforementioned display device part 11 includes 11 ' of multiple display units, the difference that 11 ' of each display unit is shown The three-dimensional image information of angle, and 11 ' of each display unit shows that identical image MN, the image that 11 ' of each display unit is shown exist Same virtual image M ' N ' are imaged as after corresponding lenticule 121, that is to say, that the image that 11 ' of each display unit is shown passes through The same 3-D view is synthesized after microlens array imaging.
In the specific implementation, above-mentioned in order to improve the stereoscopic effect of the integration imaging display device in the embodiment of the present invention Display device may include two or more display screens, can specifically be arranged in the following manner：
Mode one：
As shown in Fig. 2, aforementioned display device part 11, may include；Backlight module 111, and it is located at 111 light extraction of backlight module Multiple liquid crystal displays 112 being stacked on direction.
Mode two：
As shown in figure 4, aforementioned display device part 11, may include：Multiple organic EL display panels being stacked 113。
In aforesaid way one, each liquid crystal display 112 can be with sharing backlight module 111, so as to simplify display device Structure, in aforesaid way two, since organic EL display panel is active luminescent device, it is not necessary that backlight module is arranged, tie Structure is simpler, through the above way one and mode two can make integration imaging display device be easier realize stereoscopic display, three It is more preferable to tie up display effect.
Moir patterns are a kind of new constructions different from original linear structure formed due to periodic structure stacking, due to There are many periodic structures in display device, such as the dot structure being arranged in array, the thin film transistor (TFT) being arranged in array, And latticed black matrix layer etc., thus single-layer showing screen will appear a degree of moir patterns, with periodic structure Increase, moir patterns phenomenon can be more and more obvious, or even influence the Three-dimensional Display effect of integration imaging display device, such as single layer is aobvious The stacked structure that display screen and microlens array are constituted, the stacked structure and multilayer video screen that multilayer video screen is constituted with it is micro- The stacked structure that lens array is constituted, can all form obvious moir patterns, and in order to improve stereo display effect, it will usually it will Display device in integration imaging display device is set as multiple views single display screen or multilayer video screen, thus this is integrated into As it is easy to appear obvious moir patterns for display device.
Illustrate the elimination principle of moir patterns below in conjunction with attached drawing：
For the elimination principle of more brief description moir patterns, can be indicated to form the lamination knot of moir patterns with monochrome image Each layer structure in structure, moir patterns include reflective moir patterns due to reflecting to form and the transmission-type that is formed due to transmission not Your line, in the present embodiment by taking reflective moir patterns as an example, reflective function expression may be used in these monochrome images, i.e., for the layer Any point (x, y) in structure, numerical value 0 indicate that the reflectivity of light be 0, and numerical value 1 indicates that the reflectivity of light be 1, The more high then grayscale value of reflectivity is higher, is indicated in addition, transmission function may be used for transmission-type moir patterns, no longer superfluous herein It states.Such as moir patterns are stacked by m width monochrome images and are formed, the result images of stacking can use the product representation of m reflective function, As shown in formula (1)：
R (x, y)=r1(x,y)r2(x,y)…rm(x,y) (1)
According to convolution theorem, the Fourier transformation of function product is the convolution of single function Fourier transformation, then formula (1) Fourier transformation be formula (2)：
R (u, v)=R1(u,v)**R2(u,v)**...**Rm(u,v) (2)
It is formed since moir patterns are stacked by periodic structure, the image with periodic structure is in time domain Continuously, corresponding frequency domain is discrete, i.e., contains pulse, such as One Dimension Periodic linearity grid in the frequency spectrum of the figure Frequency spectrum be pectinate texture pulse.As shown in figure 5, each pulse in 2-d spectrum includes 3 attributes, i.e., pulse index, The geometric position of frequency vector and amplitude, frequency vector can indicate that amplitude can be indicated with B with vector f.
In practical applications, whether pulse corresponds to the moir patterns in visible time domain and then depends on human eye vision system in frequency domain System, human eye cannot effectively distinguish the details higher than specific frequency, that is, human visual system is equivalent to a low-pass filter, In high frequency section in the spatial frequency of moir patterns, some can be identified by human visual system, therefore, in order to alleviate Influence of the moir patterns to display effect needs at least partly moir patterns that at least removal human eye can identify.
In the embodiment of the present invention, above-mentioned low-pass filtering device can filter out the light within the scope of certain frequency, and the frequency The spatial frequency for the moir patterns that range can be identified with human eye has intersection, thus above-mentioned low-pass filtering device can filter out human eye At least partly moir patterns that can be identified, when the spatial frequency for the moir patterns that the human eye that each device of incident side generates can identify exists When in the frequency range, which can filter out the moir patterns that all people's eye can identify.Human eye can be known The concrete numerical value range of the spatial frequency of other moir patterns, needs actual size according to display device, application scenarios, Yi Jiren The factors such as the viewing location of eye determine, for example, the mobile phone that size is smaller, since size is small and human eye viewing distance is closer, generally The spatial frequency for the moir patterns that the human eye that mobile phone generates can identify is higher, and for public affairs such as larger-size television set or markets Large-screen display in place altogether, due to size is larger and human eye viewing distance farther out, what the human eye generally generated can identify The spatial frequency of moir patterns is relatively low.The frequency range for the light that above-mentioned low-pass filtering device can filter out can be according to actual needs It is determined by changing the internal structure of low-pass filtering device, so as to eliminate various types of Mores according to actual needs Line.
In practical applications, due to the stacking phenomenon there are periodic structure in aforementioned display device part, thus display device Light emission side be susceptible to moir patterns, moreover, above-mentioned low-pass filtering film can filter out the More that at least partly human eye can identify Line, therefore, it is possible to be arranged low-pass filtering film in any position of display device light emission side.In the embodiment of the present invention, by adopting The corresponding frequency content of basic cycle structure that moir patterns are directly filtered out with low-pass filtering device can directly inhibit the display to fill It sets to form moir patterns.
Specifically, in above-mentioned integration imaging display device provided in an embodiment of the present invention, low-pass filtering device can wrap It includes：It can make light that birefringent crystal filter occur；
Crystal filter can filter out the light more than cutoff frequency, cutoff frequency with the thickness of crystal filter increasing Increase greatly.
That is, crystal filter can make frequency [0, fCut-off]Light in range passes through, due to cutoff frequency with It the increase of the thickness of crystal filter and increases, thus the thickness of crystal filter is bigger, can pass through crystal filter The frequency range of light is bigger, and the range for the light which can filter out is smaller, therefore, it is possible to according to actual needs The thickness of crystal filter is set, to adjust the cutoff frequency of crystal filter.
Low-pass filtering device belongs to a kind of optical low-pass filter, can be made by certain thickness crystal filter and At can also be laminated by least two crystal filters, be not defined to the quantity of crystal filter herein.Such as Fig. 6 It is shown, birefringence occurs after carrying the incident light directive crystal filter of display information, emergent light is divided into ordinary ray (e light Beam) and extraordinary light (o light beams), ordinary ray and extraordinary light separate at a distance from be d, the size of distance d decides that crystal is filtered The cutoff frequency of wave plate, the high frequency section energy more than cutoff frequency can substantially be decayed, thus the crystal filter can filter out High frequency moir patterns will form the target frequency of difference frequency by changing incident beam, achieve the purpose that decrease or eliminate moir patterns. In the specific implementation, can calculate human eye according to the Pixel Dimensions size and total photosensitive area of display device can perceive not The spatial frequency of your line, can determine quantity and the position of crystal filter, by calculating ordinary light according to actual needs Line and extraordinary light separate distance d, can obtain the thickness of each crystal filter device, to obtain that the low of moir patterns can be filtered out Pass filter device.
Specifically, in above-mentioned integration imaging display device provided in an embodiment of the present invention, reference Fig. 6, crystal filter Thickness T and ordinary ray and extraordinary light separate that distance d is related, and the thickness of crystal filter meets following relationship：
Wherein, θ indicates the angle between incident light and optical axis, noIndicate the refractive index of ordinary ray, neIndicate extraordinary light Refractive index, d is the thickness of T expression crystal filters at a distance from ordinary ray and extraordinary light separate.
As tan θ=ne/noWhen, you can maximum separation distance is found out, n is worked ase≈noWhen, when tan45 °=1, formula (3) It can be reduced to formula (4)：
That is, when θ=45 °, i.e. the optical axis of crystal filter and the angle on the surface of crystal optical filter is 45 ° When, ordinary ray and extraordinary light separate distance d maximums, and the maximum value of d can be obtained by formula (4).
In practical applications, in above-mentioned integration imaging display device provided in an embodiment of the present invention, above-mentioned crystal filter The angle on surface of optical axis and crystal optical filter be 45 °, that is, θ=45 ° can make ordinary ray and extraordinary light in this way The value of separated distance d is maximum, to meet the separated condition of one-dimensional interference fringe, the light beam after crystal filter is made to send out It is estranged from, thus make light beam spatial frequency occur small variations.
Specifically, in above-mentioned integration imaging display device provided in an embodiment of the present invention, above-mentioned crystal filter is by quartz Crystalline material makes.In addition it is also possible to using other materials with birefringence function, herein not to the material of crystal filter It is defined.
In the specific implementation, in above-mentioned integration imaging display device provided in an embodiment of the present invention, low-pass filtering device packet Include a crystal filter；Or,
Low-pass filtering device includes at least two crystal filters, and the thickness of each crystal filter is different.
When low-pass filtering device only includes a crystal filter, it is being determined what low-pass filtering device incident side generated After the spatial frequency range for the moir patterns that human eye can identify, the crystal filter can be calculated according to the frequency range The thickness of cutoff frequency, the cutoff frequency and crystal filter is proportional, and the crystal filter can be obtained according to above-mentioned formula (3) The thickness of piece so that ordinary ray and extraordinary light separate at a distance from meet and eliminate the distance that one-dimensional interference fringe separates, make band There is the light beam of same image information to be divided into ordinary ray and extraordinary light, form the image of relative misalignment, so that the frequency of light beam Small variations occur for rate, to weaken moir patterns phenomenon.
When low-pass filtering device includes two or more crystal filters, it is being determined that low-pass filtering device enters After the spatial frequency range of moir patterns that the human eye that light side generates can identify, each crystalline substance that can include by the low-pass filtering device The thickness of body filter plate is set as different, thus the cutoff frequency of each crystal filter is different, enables each crystal filter The moir patterns in different frequency scope are enough filtered out, to improve the effect that low-pass filtering device filters out moir patterns, when each crystal is filtered The union of the spatial frequency for the moir patterns that wave plate can filter out is greater than or equal to the moir patterns that low-pass filtering device incident side generates Spatial frequency range when, the low-pass filtering device can filter out incident side generation all moir patterns, thoroughly disappeared with reaching Except the purpose of moir patterns.
Further, in above-mentioned integration imaging display device provided in an embodiment of the present invention, as shown in Fig. 2, can also wrap It includes：Positioned at the first lens 14 of 13 light emission side of microlens array；
First lens 14, the light being emitted for converging microlens array 13；
Low-pass filtering device 13 is preferably located between display device 11 and the first lens 14.
Referring concurrently to Fig. 3 b, in the case where being not provided with the first lens, the image that display device is shown is in display device Incident side be imaged, viewer it is seen that the display device back side the virtual image, by the first lens 14 to microlens array 13 be emitted Light converged, the image that display device is shown forms real image in figure at A, furthered viewer and display device are shown Image distance, so that the clearer viewing of viewer is shown picture.In practical applications, above-mentioned first lens 14 are preferably big mouth Diameter lens act on the convergence of light more preferable.
Low-pass filtering device 13 is not suitable for the light emission side for being set to the first lens 14, this is because what display device 11 was shown Image is imaged in the light emission side of the first lens 14, if low-pass filtering device 13 is arranged at the first lens 14 removes component frequency Light may influence image quality, influence the display effect of display device.
Specifically, in above-mentioned integration imaging display device provided in an embodiment of the present invention, above-mentioned low-pass filtering device can be with It is arranged in the following manner：
Set-up mode one：Low-pass filtering device is one；
As shown in fig. 7, low-pass filtering device 13 is between display device 11 and microlens array 12；In this way, low pass filtered The periodic structure that wave device 13 can reduce or eliminate display device 11 is superimposed the moir patterns to be formed further, since low-pass filtering After device 13 reduces the moir patterns of the formation of display device 11, thus light is using microlens array 12, it is not easy to generate again Moir patterns, to eliminate influence of the moir patterns to display effect.
Alternatively, as shown in Fig. 2, low-pass filtering device 13 is located between microlens array 12 and the first lens 14；In this way, low Pass filter device 13 can reduce or eliminate display device 11 and be superimposed the More to be formed with the periodic structure of microlens array 12 Line, to weaken or eliminate influence of the moir patterns to display effect.
Set-up mode two：Low-pass filtering device is at least two, and the moir patterns that can filter out of each low-pass filtering device Spatial frequency is not exactly the same；
(1) each low-pass filtering device is respectively positioned between display device and microlens array；Or,
(2) each low-pass filtering device is respectively positioned between microlens array and the first lens；Or,
(3) as shown in figure 8, between display device and microlens array and between microlens array and the first lens It is respectively provided at least a low-pass filtering device.
When above-mentioned low-pass filtering device is two or more, the space frequency for the moir patterns that each low-pass filtering device can filter out Rate is not exactly the same, to improve the ability for filtering out moir patterns, further increases the Three-dimensional Display effect of display device.
Further, since moir patterns are present in any period stacked structure, it, can in order to fully eliminate the influence of moir patterns Low-pass filtering device is set at the outgoing of all periodic structure light, it can be according to actual needs to low-pass filtering device Position and quantity be configured, do not limit herein.
Integration imaging display device provided in an embodiment of the present invention can be filtered out by the light emission side setting in display device The low-pass filtering device of moir patterns, to weaken or eliminate the More that the human eye that low-pass filtering device incident side generates can identify Line, to improve the Three-dimensional Display effect of integration imaging display device.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (10)

1. a kind of integration imaging display device, which is characterized in that including：Display device, and it is located at the display device light extraction The microlens array and low-pass filtering device of side；Wherein,
The display device, including：Multiple display units for the three-dimensional image information for showing different angle；
The microlens array, the three-dimensional image information for showing each display unit synthesize 3-D view；
The low-pass filtering device, the moir patterns that can be identified for filtering out human eye.
2. integration imaging display device as described in claim 1, which is characterized in that the low-pass filtering device, including：It can Make light that birefringent crystal filter occur；
The crystal filter can filter out the light more than cutoff frequency, and the cutoff frequency is with the crystal filter The increase of thickness and increase.
3. integration imaging display device as claimed in claim 2, which is characterized in that the thickness of the crystal filter meet with Lower relationship：
Wherein, θ indicates the angle between incident light and optical axis, noIndicate the refractive index of ordinary ray, neIndicate the folding of extraordinary light Rate is penetrated, d is at a distance from ordinary ray and extraordinary light separate, and T indicates the thickness of the crystal filter.
4. integration imaging display device as claimed in claim 3, which is characterized in that the optical axis of the crystal filter with it is described The angle on the surface of crystal optical filter is 45 °.
5. integration imaging display device as claimed in claim 4, which is characterized in that the crystal filter is by quartz crystal material Material makes.
6. such as claim 2~5 any one of them integration imaging display device, which is characterized in that the low-pass filtering device Including a crystal filter；Or,
The low-pass filtering device includes at least two crystal filters, and the thickness of each crystal filter is different.
7. integration imaging display device as claimed in claim 6, which is characterized in that further include：Positioned at the microlens array First lens of light emission side；
First lens, the light for converging the microlens array outgoing；
The low-pass filtering device is between the display device and first lens.
8. integration imaging display device as claimed in claim 7, which is characterized in that the low-pass filtering device is one；
The low-pass filtering device is between the display device and the microlens array；Or,
The low-pass filtering device is between the microlens array and first lens.
9. integration imaging display device as claimed in claim 7, which is characterized in that the low-pass filtering device is at least two It is a, and the spatial frequency of moir patterns that each low-pass filtering device can filter out is not exactly the same；
Each low-pass filtering device is respectively positioned between the display device and the microlens array；Or,
Each low-pass filtering device is respectively positioned between the microlens array and first lens；Or,
Divide between the display device and the microlens array and between the microlens array and first lens One low-pass filtering device is not set at least.
10. integration imaging display device as described in claim 1, which is characterized in that the display device, including；Backlight mould Group, and multiple liquid crystal displays being stacked on the backlight module light direction；Or,
The display device, including：Multiple organic EL display panels being stacked.
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Application publication date: 20181026